To provide a cystolith of a simple structure which can be easily inserted into the urethra to easily crush cystoliths without giving pain to a patient.

This cystolith crusher comprises a circular hollow body having a thin tube part of such a diameter as to be inserted into the urethra, and a thick tube part including an explosive charging part, a head part charged into the thick tube part, and a leg part coupled with the head part and inserted into the thin tube part.